HOU Jing-ying, GAO Wen-bao, SUN Jia-xin, ZHAO Yi, LIU Shi-yong. Improved Efficiency of Organic Light-emitting Diodes by Doping Each Other between the Organic Layer[J]. Chinese Journal of Luminescence, 2003,24(2): 157-160
HOU Jing-ying, GAO Wen-bao, SUN Jia-xin, ZHAO Yi, LIU Shi-yong. Improved Efficiency of Organic Light-emitting Diodes by Doping Each Other between the Organic Layer[J]. Chinese Journal of Luminescence, 2003,24(2): 157-160DOI:
That is a key factor to improve the efficiency for realizing the application of organic light-emitting diodes (OLEDs). The function layers were doped witheach other to form transition layer in order to balance the carriers injected. Meanwhile
the electrons and holes injected are effectively confined in the active layer
which leads to the increase of carriers encounter. Thus the EL efficiency was elevated. The device exhibited the maximum emission of 49300cd/m
2
at the driving voltage of 35V. The maximum efficiency is 7.96cd/A at 10.5V
which was improved by twice in comparison with the conventional doped devices. Meanwhile
the device exhibited superior operational stability with a half-life time of 1000h at a constant current density of 26.7mA/cm